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Примерите от лекцията за предаване на данни между клиента и сървъра / PHP
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| <?php | |
| function v_array_key_exists($keys, $func, $search) { | |
| foreach ($keys as $key) { | |
| if(!$func($key, $search)) { | |
| return false; | |
| } | |
| } | |
| return true; | |
| } | |
| $keys = array("operation", "numberA", "numberB"); | |
| if(!v_array_key_exists($keys, "array_key_exists", $_POST)) { | |
| die("Not enough keys"); | |
| } | |
| function add($a, $b) { | |
| return $a + $b; | |
| } | |
| function sub($a, $b) { | |
| return $a - $b; | |
| } | |
| function mult($a, $b) { | |
| return $a * $b; | |
| } | |
| function divide($a, $b) { | |
| return $a / $b; | |
| } | |
| $operation = $_POST["operation"]; | |
| $functionWhitelist = array("add", "sub", "mult", "divide"); | |
| if(!in_array($operation, $functionWhitelist)) { | |
| die("No such function."); | |
| } | |
| $result = $operation($_POST["numberA"], $_POST["numberB"]); | |
| // key1=value1&key2=value2&... | |
| header("Location: index.php?result=" . $result) ; | |
| // function navigate($url, $getParameters = array()) { | |
| // } |
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| <?php | |
| header('Content-Type: text/html; charset=utf-8'); | |
| ?> | |
| <html> | |
| <head> | |
| <title>Calculator</title> | |
| </head> | |
| <body> | |
| <form method="post" action="calculator.php"> | |
| <label for="numberA">A:</label> | |
| <input id="numberA" name="numberA" type="number" /> | |
| <br /> | |
| <label for="numberB">B:</label> | |
| <input id="numberB" name="numberB" type="number" /> | |
| <br /> | |
| <select name="operation"> | |
| <option value="add">Събираме двете числа отгоре</option> | |
| <option value="sub">-</option> | |
| <option value="mult">*</option> | |
| <option value="divide">/</option> | |
| <option value="in_array">omg</option> | |
| </select> | |
| <input type="submit" value="Calculate" /> | |
| </form> | |
| <h2>Result is:</h2> | |
| <?php | |
| if(array_key_exists("result", $_GET)) { | |
| echo "<p>" . $_GET["result"] . "</p>"; | |
| } | |
| ?> | |
| </body> | |
| </html> |
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| <?php | |
| session_start(); | |
| $count = 1; | |
| if (isset($_SESSION["count"])) { | |
| $_SESSION["count"]++; | |
| $count = $_SESSION["count"]; | |
| } else { | |
| $_SESSION["count"] = 1; | |
| } | |
| echo "You are visiting this page for " . $count . " time."; |
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| <?php | |
| session_start(); | |
| var_dump($_SESSION); |
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